JPH0631774Y2 - Power amplifier - Google Patents
Power amplifierInfo
- Publication number
- JPH0631774Y2 JPH0631774Y2 JP8825790U JP8825790U JPH0631774Y2 JP H0631774 Y2 JPH0631774 Y2 JP H0631774Y2 JP 8825790 U JP8825790 U JP 8825790U JP 8825790 U JP8825790 U JP 8825790U JP H0631774 Y2 JPH0631774 Y2 JP H0631774Y2
- Authority
- JP
- Japan
- Prior art keywords
- power
- reception
- transmission
- power amplifier
- relay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Amplifiers (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、無線送受信装置の出力電力を増幅しない場合
及び所定の値に増幅する場合に切換える機能を備え、安
定な動作並びに使用部品の低廉化及び信頼性の向上を目
的とした電力増幅装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention has a function of switching between a case where the output power of a radio transmitter / receiver is not amplified and a case where the output power is amplified to a predetermined value. The present invention relates to a power amplification device for the purpose of improvement in reliability and reliability.
（従来の技術） 第２図は、従来の実施例を示すブロック図である。(Prior Art) FIG. 2 is a block diagram showing a conventional embodiment.
図において、１は無線送受信装置、２は電力増幅装置、
３は空中線、１１は送受信切換スイッチ、２１〜２４は
継電器、２１′〜２４′は該継電器用コイル、２５は電
力増幅回路（図記号はＰＡ）、２６は空中線整合器（図
記号はＭＵ）及び２７は前記電力増幅回路の電源スイッ
チである。In the figure, 1 is a radio transmitter / receiver, 2 is a power amplifier,
Reference numeral 3 is an antenna, 11 is a transmission / reception switch, 21-24 are relays, 21'-24 'are coils for the relay, 25 is a power amplifier circuit (PA is a symbol), 26 is an antenna matching unit (MU is a symbol) And 27 are power switches of the power amplifier circuit.
送信時、無線送受信装置１の出力は、端子ａ及びａ′を
通して電力増幅装置２に入力され、電力増幅回路２５に
より増幅された後、空中線整合器２６及び端子ｄを介し
て空中線３に供給される。At the time of transmission, the output of the wireless transmission / reception device 1 is input to the power amplification device 2 through the terminals a and a ′, amplified by the power amplification circuit 25, and then supplied to the antenna 3 through the antenna matching device 26 and the terminal d. It
ただし、運用上、増幅しないで使用することもあり、こ
の場合は、電源供給端子Ｃかな電力増幅回路２５へ供給
される電源を電源スイッチ２７により断つ。また、無線
送受信装置１の出力は、電力増幅回路２５を経ずに、空
中線整合器２６及び端子ｄを介して空中線３に供給され
る。However, in operation, it may be used without amplification. In this case, the power supplied to the power supply terminal C Kana power amplification circuit 25 is cut off by the power switch 27. Further, the output of the wireless transmission / reception device 1 is supplied to the antenna 3 via the antenna matching device 26 and the terminal d without passing through the power amplification circuit 25.
受信時には、送信時に増幅するしないにかかわらず、空
中線３で捕らえられた受信信号が、端子ｄ、継電器２４
〜２１、端子ａ′及びａの順路を通り無線送受信装置１
に至る。At the time of reception, regardless of whether or not it is amplified at the time of transmission, the reception signal captured by the antenna 3 is the terminal d and the relay 24.
To 21, and the wireless transmission / reception device 1 through the route of terminals a ′ and a
Leading to.
以上の様な動作を可能とするために、継電器２１〜２４
は、次の様な切換動作を行う。In order to enable the above operation, the relays 21 to 24
Performs the following switching operation.
増幅しない場合、継電器２３及び２４は、上記送受信切
換信号に基づき切換動作（継電器２３は継電器用コイル
２３′に電流が流れた時ＯＮ、流れない時ＯＦＦ。継電
器２１，２２及び２４と継電器用コイル２１′，２２′
及び２４′の関係についても同じ）を行うが、継電器２
１及び２２は、電源スイッチ２７がＯＦＦであるため、
ＯＦＦのままになっている。When not amplified, the relays 23 and 24 perform a switching operation based on the transmission / reception switching signal (the relay 23 is ON when a current flows through the relay coil 23 ', and is OFF when no current flows. The relays 21, 22 and 24 and the relay coil). 21 ', 22'
The same applies to the relationship of 24 and 24 ', but the relay 2
For 1 and 22, the power switch 27 is OFF,
It remains off.
一方、増幅する場合、継電器２１〜２４は、電源スイッ
チ２７がＯＮであるため、上記送受信切換信号に基づき
切換動作を行う。On the other hand, in the case of amplification, the relays 21 to 24 perform the switching operation based on the transmission / reception switching signal because the power switch 27 is ON.
（考案が解決しようとする課題） 従来の実施例では、次に様な欠点がある。(Problems to be Solved by the Invention) The conventional embodiment has the following drawbacks.
(1)増幅する場合、受信から送信に切換わった都度、急
激に、電力増幅器の出力側が開放状態から空中線整合器
の入力側を装荷する状態になるため、過渡的に、回路が
不安定となる。(1) In the case of amplification, the output side of the power amplifier suddenly changes from the open state to the input side of the antenna matcher each time switching from reception to transmission. Become.
この不安定現象は、逆に、送信から受信に切換わった時
も、過渡的に現れることがある。On the contrary, this unstable phenomenon may appear transiently even when switching from transmission to reception.
(2)運用上、頻繁に送受信が切換えられるので、電力増
幅装置２に使用されている継電器は、次の理由で高価な
ものとなり、また信頼性も低かった。(2) Since the transmission and reception are frequently switched in operation, the relay used in the power amplification device 2 is expensive and has low reliability for the following reasons.
電力増幅回路２５をＯＮにして使用する場合、送信時に
継電器２２〜２４の接点は電力増幅回路２５から出力さ
れる大電力の信号を処理する必要があり、かつ受信時に
は継電器２１〜２４の接点は空中線３によって捕らえら
れた微小信号を処理する必要がある。また、送信信号ま
たは受信信号のいずれも欠落しないで伝送するように、
それぞれの継電器は高速に切換える必要がある。When the power amplifier circuit 25 is turned on and used, the contacts of the relays 22 to 24 need to process a large power signal output from the power amplifier circuit 25 at the time of transmission, and the contacts of the relays 21 to 24 at the time of reception. It is necessary to process the small signal captured by the antenna 3. Also, to transmit without missing either the transmitted signal or the received signal,
It is necessary to switch each relay at high speed.
この様な機能を満たす継電器は、特殊部品となり高価で
あり、信頼性も問題となっていた。A relay that fulfills such a function is a special part and is expensive, and reliability is also a problem.
また、送受信切換の都度、継電器２１〜２４が切換わる
ため、その切換音が大きかった。Further, since the relays 21 to 24 are switched each time the transmission / reception is switched, the switching sound is loud.
（課題を解決するための手段） 本考案は、前述した従来技術の問題点を解決することを
目的とし、その目的を達成するために、前記電力増幅回
路の出力端と前記空中線整合器の入力端との接続を、送
信と受信との切換えに共働せずに、前記電力増幅回路の
動作制御信号に基づき切換える継電器を備えた構成をと
るものである。(Means for Solving the Problem) The present invention aims to solve the above-mentioned problems of the prior art, and in order to achieve the object, an output end of the power amplification circuit and an input of the antenna matching device. The relay is configured to switch the connection with the end based on the operation control signal of the power amplifier circuit without cooperating with switching between transmission and reception.
（作用） 上記した切換手段を備えた構成をとるこにより、増幅す
る場合、電力増幅回路及び空中線整合器は、送受信切換
に関係なく、常に、接続状態にある。他方、増幅しない
場合は、電力増幅回路は休止の状態にあり、他の回路か
ら切り離された状態にある。(Operation) In the case of performing amplification by adopting the configuration including the switching means described above, the power amplification circuit and the antenna matching device are always in the connected state regardless of transmission / reception switching. On the other hand, when not amplifying, the power amplification circuit is in a rest state and is in a state of being separated from other circuits.
（実施例） 以下、本考案の実施例について図面を参照して説明す
る。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
第１図は、本考案の実施例を示すブロック図であり、図
において、第２図と同一符号は同一または相当部分を示
し、詳細な説明は省略する。２８及び２９は継電器であ
る。FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, the same reference numerals as those in FIG. 2 designate the same or corresponding parts, and detailed description thereof will be omitted. 28 and 29 are relays.
図においては、継電器２８は、無線送受信切換スイッチ
１１から与えられる送受信制御信号に基づき切換動作を
行う。In the figure, the relay 28 performs the switching operation based on the transmission / reception control signal given from the wireless transmission / reception changeover switch 11.
一方、継電器２９は、電力増幅回路２５の動作制御信号
に基づき切換動作を行う。即ち、電力増幅回路２５を動
作させるために、電源スイッチ２７をＯＮとすると、継
電器２９もＯＮとなる。また、電力増幅回路２５を非動
作とさせるために、電源スイッチ２７をＯＦＦとする
と、継電器２９もＯＦＦとなる。On the other hand, the relay 29 performs the switching operation based on the operation control signal of the power amplification circuit 25. That is, when the power switch 27 is turned on to operate the power amplification circuit 25, the relay 29 is also turned on. When the power switch 27 is turned off in order to make the power amplification circuit 25 inoperative, the relay 29 is also turned off.
このようにして、増幅する場合には、電力増幅回路２５
と空中線整合器２６を、送受信切換に関係なく、常に、
接続状態にする。In this way, when amplifying, the power amplifier circuit 25
And the antenna matching device 26, regardless of transmission / reception switching,
Set the connection status.
他方、増幅しない場合、電力増幅回路２５は他の回路か
ら切り離される。On the other hand, when not amplifying, the power amplifier circuit 25 is separated from other circuits.
従って、増幅する場合には電力増幅回路と空中線整合器
とが常に接続状態となるので、電力増幅回路の出力負荷
インピーダンスが全周波数範囲で有限の値を持つように
なり、負荷インピーダンスに依存する電力増幅回路の増
幅率が出力開放の場合に比較して低く押さえられるた
め、自励発振等の不良動作が起こらず、動作が安定であ
る。Therefore, when amplifying, the power amplifier circuit and the antenna matching device are always connected, so that the output load impedance of the power amplifier circuit has a finite value in the entire frequency range, and the power depending on the load impedance Since the amplification factor of the amplifier circuit is suppressed lower than when the output is open, a malfunction such as self-excited oscillation does not occur and the operation is stable.
また、従来の装置で必要であった特殊で高価な継電器2
1、22、23、24が、本考案の装置では特殊で高価な継電
器21、24のみでよくなり、継電器の数が減って低廉に寄
与する。さらに、送受信時に動作する継電器も従来の2
1、22、23、24から21、24（ＰＡ動作時）又は28、24
（ＰＡ非動作時）のみとなり、数が減って信頼性が向上
する。In addition, the special and expensive relays required for conventional equipment2
1, 22, 23, and 24 are only required for the special and expensive relays 21 and 24 in the device of the present invention, which reduces the number of relays and contributes to low cost. In addition, the relay that operates when transmitting and receiving
1, 22, 23, 24 to 21, 24 (when operating PA) or 28, 24
Only when the PA is not operating, the number is reduced and the reliability is improved.
（考案の効果） 以上詳述したように、本考案による電力増幅装置は、内
部の電力増幅回路と空中線整合器が送受信切換に関係な
く、常に、接続状態となるので動作が安定である。(Effect of the Invention) As described in detail above, the power amplifier according to the present invention is stable in operation because the internal power amplifier circuit and the antenna matching device are always connected regardless of transmission / reception switching.
また、特殊で高価な継電器の数も減って低廉化に寄与
し、さらに送受信切換時に動作する継電器の数も減って
信頼性が向上する。Further, the number of special and expensive relays is reduced, which contributes to cost reduction, and the number of relays that operate at the time of switching between transmission and reception is reduced, and reliability is improved.
第１図は本考案の実施例を示すブロック図、第２図は従
来の実施例を示すブロック図である。 １……無線送受信装置、２……電力増幅装置、３……空
中線、１１……送受信切換スイッチ、２１〜２４……継
電器、２１′〜２４′……継電器用コイル、２５……電
力増幅回路、２６……空中線整合器、２７……電源スイ
ッチ、２８，２９……継電器。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional embodiment. 1 ... Wireless transmission / reception device, 2 ... power amplification device, 3 ... antenna, 11 ... transmission / reception switch, 21-24 ... relay, 21'-24 '... relay coil, 25 ... power amplification circuit , 26 ... Antenna matching device, 27 ... Power switch, 28, 29 ... Relay.
Claims (1)
合器及び複数の継電器から成る電力増幅装置を接続し、
該電力増幅装置に空中線を接続して用い、送信と受信と
の切換えをし、前記無線送受信装置の出力電力を増幅し
ない場合と所定の電力に増幅する場合との切換えをする
前記複数の継電器を備えた前記電力増幅装置において、
前記電力増幅回路の出力端と前記空中線整合器の入力端
との接続を、前記送信と受信との切換に共働せずに、前
記電力増幅回路の動作制御信号に基づき切換る継電器を
備えたことを特徴とする電力増幅装置。1. A power amplifier device comprising a power amplifier circuit, an antenna matching device and a plurality of relays is connected to a radio transmitter / receiver device,
An antenna connected to the power amplifier is used to switch between transmission and reception, and to switch between a case where the output power of the radio transmitter / receiver is not amplified and a case where the output power is amplified to a predetermined power. In the power amplification device provided,
A relay that switches the connection between the output end of the power amplification circuit and the input end of the antenna matching device based on the operation control signal of the power amplification circuit without cooperating in switching between the transmission and the reception is provided. A power amplification device characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8825790U JPH0631774Y2 (en) | 1990-08-23 | 1990-08-23 | Power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8825790U JPH0631774Y2 (en) | 1990-08-23 | 1990-08-23 | Power amplifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0446708U JPH0446708U (en) | 1992-04-21 |
| JPH0631774Y2 true JPH0631774Y2 (en) | 1994-08-22 |
Family
ID=31821339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8825790U Expired - Lifetime JPH0631774Y2 (en) | 1990-08-23 | 1990-08-23 | Power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0631774Y2 (en) |
-
1990
- 1990-08-23 JP JP8825790U patent/JPH0631774Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0446708U (en) | 1992-04-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |